John Hurt in The Elephant Man (1980)
https://www.imdb.com/name/nm0000457/mediaviewer/rm4173760256/ (suggested by Mariojacobs)
The best part is that since the IMDb always print the names of the people in the images, I don’t have to write the name for each entry. But I will have an IMDb link to a picture of how the actor looks without makeup. And nowhere in the film is their real face is shown except for Mel Brooks and Eddie Murphy who did multiple roles in their own films like “Coming To America” or “Spaceballs” or “Wizard of Oz”. One entry per actor.
If you know anybody else who had a makeover of the worst or weird kind for a film, the makeup chair is right over here.